From ed628d30b05b4f5884f1d2029633cf155bf5e571 Mon Sep 17 00:00:00 2001 From: "Richard W.M. Jones" Date: Thu, 24 Nov 2011 14:06:31 +0000 Subject: [PATCH] virt-alignment-scan: Add checks for when API calls return NULL. In particular, virt-alignment-scan -a /dev/null would segfault because of an error returned by parted. (cherry picked from commit 7b192f5a672197ad67ac23501e420c674aa2f3a9) --- align/scan.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/align/scan.c b/align/scan.c index 529add5..7b4631a 100644 --- a/align/scan.c +++ b/align/scan.c @@ -228,9 +228,13 @@ scan (void) struct guestfs_partition_list *parts; devices = guestfs_list_devices (g); + if (devices == NULL) + exit (EXIT_FAILURE); for (i = 0; devices[i] != NULL; ++i) { parts = guestfs_part_list (g, devices[i]); + if (parts == NULL) + exit (EXIT_FAILURE); /* Canonicalize the name of the device for printing. */ if (STRPREFIX (devices[i], "/dev/") && -- 1.8.3.1